Customer Reviews
Average Customer Review

28 of 28 people found the following review helpful
5.0 out of 5 stars Great inverter, just make sure you wire it right!, December 26, 2016
By 
Dobie Tanpaw (Pittsburgh, PA) - See all my reviews
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I've been using this in my semi truck for a little over a month now. It works great and has handled everything I've plugged into it. I run a 1,500 watt electric tea kettle, a 1,000 watt microwave, 700 watt rice cooker, LCD TV, laptop and a bunch of other stuff from it, often simultaneously, and it's never complained.

I also don't get that annoying buzz from the TV's speakers like you get from a modified-sine wave inverter.

The biggest thing you have to remember is the MASSIVE amount of amperage this will draw on the 12 volt side when you're using it. I have it wired with dual-runs of 1/0 welding cable, two for the positive and two for the negative, directly to the truck's batteries so that I don't get a large voltage drop when I run the microwave. or tea kettle.
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46 of 48 people found the following review helpful
4.0 out of 5 stars Good deal for price. Performs as advertised. I think there is a possible safety issue (read my review)., December 27, 2016
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This performs as it is advertised. I connected this to a bank of deep cycle batteries with 1 AWG copper wire, 8' long with soldered lugs on each end. Connected a Kill-a-Watt meter and a hair dryer. At the high setting, the Kill-a-Watt showed 115VAC, 1400 watts (1430 Volt-Amps), power factor was .98, which you'd expect for a mostly pure resistive load. Current draw from the battery bank (via a cheap clamp on DC amp-meter showed about 120 amps @ 12.8 volts. So actual power in was about 1536 watts. That gives the inverter an efficiency of about 91%. Built in Watt meter showed 1440 "Watts" (more on the meter later). So efficiency is pretty good. I ran the hair dryer for about 20 minutes and had no issues. The case got warm, but I could touch it. Connected to batteries, with the switch ON, but NO load, the inverter draws about 600 mA.

The built in digital meter: I am pretty sure the meter displays Volt-Amps, and not Watts. The manual talks about watts, but this... Read more
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16 of 16 people found the following review helpful
5.0 out of 5 stars 1500w (3000 surge) Pure Sine Wave - Impressed So Far!, March 27, 2017
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Pleased with the purchase so far. Have finished installation in my travel trailer and completed some basic testing. This review is for the VertaMax 1500 Watt (3000W surge) 12V Pure Sine Wave Power Inverter. It is able to successfully run a 12 amp vacuum cleaner and a nominal 600 watt microwave (which actually consumes 800 watts when operating). It ran the microwave for 2 minutes and never became warm enough for it's internal fan to engage. It needs to be connected to your battery via a 150 amp fuse on the + line. Be sure you trim the heat-shrink on the cables so the cable ends can mate flat against the power terminals, this ensures good contact surface between the two. I replaced the factory supplied terminal bolts because they appeared not to be a standard SAE size. My replacements are 1/4" stainless bolts with 7/16" heads - use a lock washer to avoid connections coming loose due to vibration. The remote switch is a nice option and one thing not demonstrated in the... Read more
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